Alternatives to Margaret?

We are expecting our second child and I'm dreading the girl name discussion with my husband. He loves the name MargaretElizabeth and cannot let any other girl names into his heart. I love Elizabeth but simply do not like Margaret as a first name. I'm looking for names with a similar sound/style as Margaret (harder consonants is what he likes). Similar meanings (like Pearl) are less appealing to him than finding a similar sound, but worth considering.